import java.util.regex.Pattern; public class CharUtil {     public static void main(String[] args) {         String[] strArr = new String[] { "www.micmiu.com", "!@#$%^&*()_+{}[]|\"'?/:;<>,.", "！￥……（）——：；“”‘'《》，。？、", "不要啊", "やめて", "韩佳人", "???" };         for (String str : strArr) {             System.out.println("===========> 测试字符串：" + str);             System.out.println("正则判断结果：" + isChineseByREG(str) + " -- " + isChineseByName(str));             System.out.println("Unicode判断结果 ：" + isChinese(str));             System.out.println("详细判断列表：");             char[] ch = str.toCharArray();             for (int i = 0; i < ch.length; i++) {                 char c = ch[i];                 System.out.println(c + " --> " + (isChinese(c) ? "是" : "否"));             }         }     }     // 根据Unicode编码完美的判断中文汉字和符号     private static boolean isChinese(char c) {         Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);         if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS                 || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B                 || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS                 || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION) {             return true;         }         return false;     }     // 完整的判断中文汉字和符号     public static boolean isChinese(String strName) {         char[] ch = strName.toCharArray();         for (int i = 0; i < ch.length; i++) {             char c = ch[i];             if (isChinese(c)) {                 return true;             }         }         return false;     }     // 只能判断部分CJK字符（CJK统一汉字）     public static boolean isChineseByREG(String str) {         if (str == null) {             return false;         }         Pattern pattern = Pattern.compile("[\\u4E00-\\u9FBF]+");         return pattern.matcher(str.trim()).find();     }     // 只能判断部分CJK字符（CJK统一汉字）     public static boolean isChineseByName(String str) {         if (str == null) {             return false;         }         // 大小写不同：\\p 表示包含，\\P 表示不包含         // \\p{Cn} 的意思为 Unicode 中未被定义字符的编码，\\P{Cn} 就表示 Unicode中已经被定义字符的编码         String reg = "\\p{InCJK Unified Ideographs}&&\\P{Cn}";         Pattern pattern = Pattern.compile(reg);         return pattern.matcher(str.trim()).find();     } }